CO2 Pollutants Research Articles

Regulating the Microenvironment of Zn‐Based Metal‐Organic Framework for Enhanced CO2 Electroreduction to Formate

Electrocatalytic CO2 reduction (ECR) has emerged as one of the most promising strategies to alleviate the energy crisis and CO2 pollution, for which a wide variety of catalysts are under development. Metal‐organic frameworks (MOFs) with clear and designable structures are an excellent platform for ECR. Here, two isostructural N, O‐coordinated Zn‐MOFs, FJU‐126‐4F and FJU‐126‐CH3, based on terephthalic acid ligand with different groups (one is ‐4F, the other is ‐CH3) on the benzene ring, have been constructed for ECR catalysts. Significantly, the different functional groups make the performance difference of ECR. The maximum Faraday efficiency of formate (FEformate) for FJU‐126‐4F is 60.5% with the partial current density of formate (jformate) of ‐19.35 mA cm‐2 at ‐1.47 V, while the optimum FEformate of FJU‐126‐CH3 is 50.2% with the jformate of ‐10.04 mA cm‐2 at ‐1.57 V. The work provides insight into the rational design of MOF catalysts for ECR.

Science and Technology of Supercapacitor and its Applications

Super-capacitors (SCs) are significant because of their unique characteristics, which include long cycle life, high strength, and environmental friendliness. SCs use electrode substances with high specific surface area and thinner dielectrics. Referring to the energy storage mechanism, all kinds of SCs were reviewed in this review paper; a quick synopsis of the materials and technology used for SCs is provided. Materials such as conducting polymers, carbon materials, metal oxides, and their composites are the main focus. The performance of the composites was evaluated using metrics such as energy, cycle performance, power capacitance, and rate capability, which also provides information on the electrolyte materials. To precisely appraise the state of Charge (SoC) in the super SCs cell module, its identical model o is used. It is expected that this model will accurately capture the features of the cell module, specifically its standing-related self-discharge behavior, and the outcomes of parameter identification directly impact its accuracy. Engine downsizing is a result of the requirement to increase fuel efficiency and lower CO2 and other hazardous pollutant emissions from internal combustion engine cars. However, smaller turbocharged engines have a relatively poor torque capability at low engine speeds. To solve this issue, an electrical torque boost based on SCs may be used to help recover energy during regenerative braking as well as during acceleration and gear changes.

Market Acceptance Strategy through Customer Centricity Approach in Electric Truck Product Development with Systematic Method Literature Review

Transportation is one of the contributors to CO2 pollutants that cause Greenhouse Gas (GHG) emissions, ultimately impacting global climate change. The creation of electric vehicles is concerned with clean energy and handling global climate change. This aligns with the 17 global goals of the United Nations, which are the world agenda to protect planet Earth and for everyone to live a decent life by 2030. However, creating innovations in production and transforming consumers to switch from fuel vehicles to electric vehicles, especially electric trucks, is equally difficult. In 2022, based on data from Vehicle Type Approval, electric truck sales in Indonesia have the lowest number compared to other types of electric vehicles. This study aims to discover how innovation should be carried out and how consumer desires can be fulfilled from these innovations so that the market easily accepts electric truck products with the hope that interest and sales can increase. This study uses a literature study method that provides an overview of how the customer-centricity approach is applied to support innovation during production. The results of this study provide suggestions in the development of electric trucks that companies should not only focus on technology but also focus on consumer needs to adopt electric truck technology such as cost and economic benefits, charging infrastructure available in various locations, government support and policies, social influence, economic and social factors, promotion policies and regional support.

The Synergy Between CO2 and Air Pollution Emissions in Chinese Cities by 2060: An Assessment Based on the Emissions Inventory and Dynamic Projection Model

Synergizing air pollution control and climate change mitigation has been of significant academic and policy concern. The synergy between air pollution and carbon emissions is one of the measures to understand the characteristics and process of the air pollution–carbon synergistic control, which will also provide valuable information for collaboratively achieving Sustainable Development Goals (SDGs) (such as SDGs 11 and 13). This study establishes a systematic framework integrating emissions inventory and projection models, correlation mining and typology analysis methods to predictively evaluate the synergy and comprehensive coordination between air pollution and carbon dioxide (CO2) emissions in Chinese cities by 2030, 2050, and 2060 under different policy scenarios for air pollution and CO2 emissions control. The results reveal the significant effects of synergistically implementing clean air and aggressive carbon-reducing policies on mitigating air pollution and CO2 emissions. Under the On-time Peak-Net Zero-Clean Air and Early Peak-Net Zero-Clean Air scenarios, the total reduction and synergy for air pollution and CO2 emissions will be more significant, particularly by 2050 and 2060. This study is the first to integrate scenario projection and synergy evaluation in air pollution and CO2 research, providing a novel supplement to the air pollution–climate change synergy methodology based on co-benefit estimation. The methods and findings will also contribute to measuring the achievement and analyzing the interaction of the SDGs.

Rape straw biochar-assisted preparation of flower-like BiOCl with enriched oxygen vacancies for efficient photocatalytic CO2 reduction and pollutants degradation

Utilizing photocatalytic technology to transform CO2 into high added value chemical products has represented an effective strategy for alleviating the climate problems that have arisen due to excessive CO2 emissions. As a typical bismuth-based photocatalyst, BiOCl has garnered widespread attention due to its unique layered structure and low toxicity. However, the low light utilization efficiency and the rapid recombination of e−/h+ pairs severely hinder the practical application of BiOCl. Introducing oxygen vacancies (OVs) into BiOCl has been demonstrated to be one of the effective strategies for enhancing the photocatalytic performance of BiOCl. However, introduction of OVs through a mild and cost-effective approach remains a significant challenge. In this work, we developed a strategy for introducing OVs on BiOCl, which indues the growth of BiOCl into flower-like spherical structures and introduction of abundant OVs through addition of rape straw biochar (RC) under hydrothermal conditions. The synergistic interaction of RC and OVs endows with BiOCl more active sites as well as higher photogenerated carriers (e−/h+) separation efficiency. When the mass ratio of RC to BiOCl is 0.5 % (RC-0.5), the sample demonstrates the best performance, conversion of CO2 to CO on the sample is 4.0 μmol g−1 h−1, which is 3.08 times higher than that on the reference BiOCl. Additionally, versatility of the photocatalysts was further evaluated through photocatalytic degradation of rhodamine B (RhB) and perfluorooctanoic acid (PFOA). The degradation rate constant of RhB and PFOA on the RC-0.5 sample is 0.0642 min−1 and 0.00566 min−1, respectively, which is 2.26 times and 0.43 times higher than that on the reference BiOCl. Total organic carbon (TOC) experiments demonstrate that RhB can be effectively mineralized into CO2, H2O and small molecules on the photocatalyst. The main reactive species involved in the photocatalytic degradation process were investigated through active free radical trapping experiments and electron paramagnetic resonance (EPR). This work provides a viable strategy for the development of high-performance BiOCl photocatalysts for environmental applications.

Identification and Evaluation of Synergy Between Carbon Emissions and Air Pollutants in Inter-Industrial Trade Among Provinces in China

With the vigorous promotion in China of efforts to reduce pollution and carbon emissions, examining their synergies becomes increasingly crucial. This study used the multi-regional input–output (MRIO) table to build the consumption-based industrial emissions inventories of CO2 and three major air pollutants (PM2.5, NOx, and SO2) and constructed synergistic emission indices of the intensity and magnitude to identify and evaluate the synergy between carbon emissions and air pollutants in inter-industrial trade among 30 provinces in mainland China. The results show that more than 85% and 40% of inter-provincial and inter-industrial trades have synergistic emissions between CO2 and air pollutants, respectively. We identified 77 inter-provincial trades and 84 inter-industrial trades among provinces with strong synergistic emissions. They are mainly reflected in the demand of the construction industry in Zhejiang and Guangdong for the nonmetal mineral products manufacturing industry in Henan, and the metal smelting and processing industry in Hebei, along with the demand of the service industry in Beijing for the electric power, steam, and hot water production and supply industry in Inner Mongolia. Our study provides new insights into the synergistic reduction of CO2 and air pollutants within the supply chain, thereby enriching the discourse on regional and industrial synergies in achieving sustainable development goals.

Transport characteristics and dispersion evolution of CO-NOx mixture exhaust for shuttle movement emission in short-wall continuous mining face.

To investigate the evolution of CO and NOx pollution in the exhaust gas from diesel-powered shuttles under the double lane ventilation system of short-walled continuous mining face, this article uses a combination of numerical simulation and field tests to numerically simulate and analyze the pollution transport law of CO and NOx emitted from the shuttles at three locations: heading tunnel, contact alley and supporting tunnel. The results show that when the shuttle car in heading tunnel, the CO and NOx discharged from the shuttle discharge port move toward the exit of the tunnel at an average speed of 1.25m/s. The high CO and NOx concentration area appears at the discharge port, with the highest CO volume fraction of 82.5ppm and the highest NOx volume fraction of 28.25ppm. When the shuttle car at the contact alley, by the two walls of the alleyway on the gas diffusion space extrusion effect, CO and NOx in X = 37.5m ~ 42.5m range gathered, appear high CO and NOx concentration band. When the shuttle car in supporting tunnel, it is hindered by the belt conveyor within the range of X = 63m ~ 64.5m, so CO and NOx fail to spread to the outlet of the roadway in time and pile up at the bottom of the roadway. The highest CO volume fraction is 76.25ppm and the highest NOx volume fraction is 28.28ppm.According to the different positions of the car, the pollution areas of CO and NOx exceeding the specified threshold (24ppm, 2.5ppm) were divided, and the distribution characteristics of CO and NOx pollution were obtained by quantitative analysis through curve fitting, which provided a theoretical basis for the prevention and control of harmful substances emitted by fuel power equipment in underground environment.

System Dynamics Model of CO2 Pollution Stocks Changes Due to Emissions and Absorbent in Indonesia

Air pollution, including CO2 pollution, is a serious issue worldwide, including in Indonesia. This CO2 pollution can impact public health and the environment. In the context of economic development, activities in Indonesia are increasing, leading to higher CO2 emissions. The highest CO2 emissions come from deforestation, large-scale peatland fires, and, to a lesser extent, burning fossil fuels for energy. This research focuses on a simple System Dynamics model approach to understand the cause-and-effect relationship of changes in CO2 pollution stocks concerning emissions and absorption in Indonesia. The method used in this study is qualitative based on system dynamics. System dynamics is a method that can be used to create structures, predict behavior, and provide feedback. The System Dynamics model uses Powersim Studio 10 Express, covering the research period from 2020 to 2040. The results of the system dynamics model show two structures related to CO2 pollution stocks: a positive feedback (reinforcing loop) from CO2 emissions and a negative feedback (balancing loop) from CO2 absorbent. The behavior of the model is exponential growth, it’s also considered valid due to simulation results based on real data processing and statistical analysis, yielding an Average Means Error (AME) of 0.56%.

Simultaneous electrochemical upgrading of polyethylene terephthalate plastic and carbon dioxide into valuable chemicals

The natural environment is gravely threatened by plastic made of polyethylene terephthalate (PET) and CO2 pollution, which not only damage the environment but also waste a significant amount of carbon energy. Here, an electrocatalytic waste upgrading method to convert PET waste plastic and CO2 wastes into formate at the anode and cathode simultaneously. The anodic Mn/CoOOH electrocatalyst achieves high Faradaic efficiency (FE) of 96.7 % for formate production via PET hydrolysate oxidation and the cathodic oxygen vacancy rich Bi2O2CO3 (OV-rich BOC) electrocatalyst achieves high FE of 97.5 % for formate production via CO2 reduction. The constructed Mn/CoOOH||OV-rich BOC integrated system gets a total FEformate of 184.6 % at 150 mA cm−2 by combining integrated two half-reactions, along with outstanding stability for 100 h with a cell voltage of 2.2 V. More importantly, the oxidation and reduction intermediate (*CH2OH and *OCHO) were detection by quasi-in-situ electron paramagnetic resonance (EPR) and operando attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), which contribute to the understanding of reaction pathways. Techno-economic analysis shows that the final product potassium diformate can get profit instead of format acid, which points out the direction of practical application. Based on this study, electrocatalytic PET plastic valorization coupled with CO2 reduction can be a practical and cost-effective way to achieve the production of valuable chemicals.

CO oxidation on single Pt atom supported by two-dimensional ZnO monolayer: Reaction mechanism and precursor activation

CO oxidation is an effective solution for controlling CO emissions, and supported single-atom catalysts have shown excellent catalytic reactivity for chemical reactions. CO oxidation on a single Pt atom supported by a two-dimensional ZnO monolayer is investigated by combing ab initio molecular dynamics and density functional theory calculations. Seven reaction mechanisms are identified, including two new trimolecular Elie-Riedel mechanisms; six of them, except for the Mars-van Krevelen mechanism, have rate-limiting step energy barriers between 0.31 and 0.47 eV, which is lower than the experimental activation barrier of 0.81 eV on single Pt atoms supported by bulk ZnO, and is much lower than that of about 1.0 eV on Pt(111) surface. Furthermore, two preferred reaction mechanisms are discovered, an Eley-Rideal mechanism and a trimolecular Eley-Rideal mechanism, both of which have rate-limiting step energy barriers as low as 0.31 eV. Our results show that the more antibonding orbitals are filled in the reaction precursor, the higher its activation level. Activation of precursors plays an important role in CO oxidation and leads to different mechanisms. These results provide insights into the design of efficient single-atom catalysts supported by two-dimensional materials for the removal of CO pollutants.

Prevalence and association with environmental factors and establishment of prediction model of atopic dermatitis in pet dogs in China.

Canine atopic dermatitis (CAD) is a common skin disease in dogs. Various pathogenic factors contribute to CAD, with dust mites, environmental pathogens, and other substances being predominant. This research involved comprehensive statistical analysis and prediction of CAD in China, using data from 14 cities. A distributed lag nonlinear model (DLNM) was developed to evaluate the impact of environmental factors on CAD incidence. Additionally, a seasonal auto-regressive moving average (ARIMA) model was used to forecast the monthly number of CAD cases. The findings indicated that CAD mainly occurs during June, July, August, and September in China. There was a positive correlation found between CAD incidence and temperature and humidity, while a negative correlation was observed with CO, PM2.5, and other pollutants.

Research Progress on Characteristics of On‐Line Hydrogen Production by Methanol Steam Reforming

On‐line hydrogen production via methanol steam reforming (MSR) has gained considerable interest due to its high efficiency, affordability, and eco‐friendliness. Currently, this technology has been widely applied in the industry and has become an important method for hydrogen energy production. However, there are still some issues with this technology, such as short catalyst lifespan and CO pollution, which require further research and improvement. This article provides a comprehensive review of the research progress made in this field, with a particular focus on the catalyst development, reaction mechanism, theoretical calculation, and reactor design. Additionally, the challenges and prospects of on‐line hydrogen production by MSR are also discussed. In conclusion, MSR technology for hydrogen production has vast application prospects and development potential. It will be further explored in‐depth and extensively in future research.

Environmental, technological, and economic analysis of supercritical coal-fired power system.

Developing countries primarily rely on fossil-based energy sources to meet their energy demands. The use of fossil fuels has several adverse environmental repercussions that damage the biosphere both directly and indirectly. Among fossil fuels, coal brings about the heaviest environmental externalities, yet its abundance makes its use widespread, particular in countries having significant power generation deficits, such as Pakistan. This study presents an environmental, technological, and economic analysis of a supercritical coal-based power unit located in Pakistan and used for electricity generation. For environmental assessment, the CML-1A baseline method in OpenLCA software was used, and eight midpoint impact indicators were selected. The functional unit chosen was 1 MWh of generated electricity. The results indicated that the category of ozone layer depletion has the least impact, whereas global warming potential has the highest impact score. Except for photochemical oxidation and human toxicity, the plant operational stage dominated most of the selected impact categories. The current paper also reveals that the removal efficiency of CO2 and other pollutants is higher in supercritical compared to subcritical plants. Moreover, the economic feasibility of supercritical plant is compared with chemical looping combustion (CLC)-based supercritical coal-fired power plant, and results shows that CLC-based coal-fired power plant is a more competitive and environmentally friendly option. The utilization of a scientific cleaner energy-management system in real-time, as exemplified in this study, may facilitate the development of a optimalpolicy framework that encouragesfor the adoption of cleaner coal power generation in developing countries, ultimately resulting in improved energy sustainability. Furthermore, this paper also presents some policy implications which could be helpful for policymakers, researchers, and industrialists to improve the sustainability of energy in emerging economies.

Multicomponent adsorption mechanism of CO2, SO2, NO, and C7H8 from flue gases on nitrogen-doped biochar: Experimental and computational insights

The comprehensive control of CO2 and gaseous pollutants in coal-fired flue gas is urgent and difficult. As a green low-cost adsorbent, nitrogen-doped biochar has potential application in the control technology of flue gas pollutants. Still, its multi-component adsorption characteristics for flue gas are unclear. In this study, the multi-component adsorption characteristics of CO2, SO2, NO, and C7H8 on nitrogen-doped biochar were explored at different temperatures (25–120 °C), and the competitive mechanism of multi-component adsorption was revealed through continuous adsorption experiments and numerical calculation. The adsorption capacities of CO2, SO2, NO, and C7H8 by nitrogen-doped biochar can reach 38.1, 78.9, 3.1, and 245.2 mg/g, among which CO2, SO2, and C7H8 show strong competitive effects. Their adsorption capacities are decreased by 42 % (CO2), 28 % (SO2), and 27 % (C7H8) respectively compared with the single-component adsorption. This is because there are not only more C7H8 adsorption sites on nitrogen-doped carbon, but also C7H8 can partially occupy the adsorption sites of SO2 and CO2 during multi-component adsorption. Combined with the calculation results of density functional theory, the competitive ability of the three gases can be ranked as follows: C7H8 > SO2 > CO2.

Unveiling the promoting mechanism of Mo on the performance of CuCeOx catalyst for simultaneously NH3-SCR denitration and CO oxidation under oxygen-rich conditions

NOx and CO coexisted in numerous actual industrial flue gases. The simultaneous removal of NOx and CO had great potential for application but remained still a challenge. Herein, a series of Mo-modified CuCeOx catalyst was developed to simultaneously achieve NH3-SCR denitration and CO oxidation. The results indicated that the CCM3 catalyst displayed the optimal performance with 91.2 % NOx conversion and 100 % CO conversion as well as excellent long-time stability and SO2 or/and H2O tolerance at 225 ℃. It was found that the strong interaction between Cu, Ce and Mo oxides resulted in the particles highly dispersed with smaller size on catalyst surface, which could provide abundant active sites to decreasing the competitive adsorption among reactive gases. Furthermore, the Mo modification promoted the production of more oxygen vacancies, Ce3+ and Oα species, which facilitated the redox recycle and the generation of intermediates. Moreover, the H2-TPR and NH3/CO/O2-TPD analysis illustrated that the reducibility and the capacity for reaction gas adsorption and activation were enhanced, which improved low-temperature activity. The in situ DRIFTS experiment revealed that the E-R and L-H mechanism were existed in NH3-SCR process on CC and CCM3 catalysts. What’s more, the stronger acidity and strengthened E-R mechanism on CCM3 catalyst hindered the adsorption of SO2 and weakened the inhibition effect of competitive adsorption among SO2 and NO. Additionally, both surface lattice oxygen and chemisorbed oxygen could react with Cu+–CO species to produce CO2, the pathway obeyed L-H and MvK mechanism. This work may provide a novel strategy for the treatment of CO and NOx pollutants in industrial flue gas.

Synergetic control analysis of CO2 and air pollutants in the automobile manufacturing industry in Guangdong-Hong Kong-Macao Greater Bay area: The supply chain perspective

The pollution reduction and carbon-cutting measures of Guangdong-Hong Kong-Macao Greater Bay Area (GBA) set a benchmark for sustainable development in China's urban agglomerations. While the automobile manufacturing industry significantly boosts the GBA's economic growth, its extensive cross-regional and cross-sector supply chains pose challenges for CO2 and pollution emission control. Analyzing emissions characteristics and transfer paths can clarify the GBA's role and guide targeted reduction measures. According to the multi-region input-output (MRIO) model and structural path analysis (SPA), this study clarifies that the automobile manufacturing industry in Guangdong, Hong Kong and Macao causes more than 72% of the CO2 and air pollutant (SO2, NOX, PM10) spillover to other regions, where the energy-resource-dominant upstream regions of Hebei, Shandong, and Henan emit high levels of CO2 and air pollutants, according for 19% of indirect supply chain emissions; the energy sector, non-metals sector, and metals sector are the key upstream, according for 59% of indirect supply chain emissions. Furthermore, our study identifies the Beijing-Tianjin-Hebei and neighboring regions, parts of the western region, and the GBA region and the metal products industry, automobile manufacturing industry, and water, electricity, and gas supply industry sector as the core area and key sector with significant synergistic effects on CO2 and air pollutant emissions. Therefore, implementing emission reduction measures in the identified core areas and sectors will contribute to the achievement of synergistic enhancement. These findings can inform decision-makers to promote sustainable development in the region. Furthermore, the research perspective based on the industrial chain offers new insights into defining regional responsibility for CO2 emissions and enhancing regional cooperation.

Theoretical study of tandem catalysts based on metal porphyrin-phthalocyanine two-dimensional carbon-rich conjugated frameworks for the co-reduction of NO3− and CO2 in the electrosynthesis of methylamine

Electrocatalytic NO3− and CO2 co-reduction to synthesize methylamine can remove NO3− and CO2 pollutants and produce valuable methylamine. However, the catalytic mechanism of electrocatalytic NO3− and CO2 co-reduction for the synthesis of methylamine is not sufficiently understood, and this research remains challenging. To supply the catalytic mechanism needed to create effective electrocatalysts, we systematically investigated the performance of metal-extended phthalocyanine and metalloporphyrin tandem catalysts to produce methylamine electrocatalytically through the co-reduction of NO3− and CO2 and found that the MoCo-Pc-Pt-N5Por COFs, MoNi-Pc-Pt-N5Por COFs, and MoRu-Pc-Pt-N5Por COFs were the most effective electrocatalysts. Also, we found that the metallic TM atoms in the catalysts with the NO3− and CO2 molecules with the coexistence of charge depletion and charge accumulation behavior as the activation mechanism of NO3− and CO2. This work offers a theoretical foundation for experimental research and opens up new possibilities for the rational design of effective electrocatalytic NO3− and CO2 co-reduction catalysts for synthesizing methylamine.

A review on carbonaceous materials for fuel cell technologies: An advanced approach

AbstractIn the context of sustainable development environment‐friendly approaches, technologies have gained momentum with dual objective of achieving technological advancements and innovations through green energy source. One such approach is fuel cells which have been identified as a potential source for the production of electric power from chemical fuels. Fuel cell has become popular as they represent environmentally friendly method to generate power. The trucking industry and fleet transit networks have shown the potential of the hydrogen fuel cell despite many obstacles, such as material composition, storage, and distribution, because it can be used and moved securely, leading to a significant reduction in CO2 and particulate pollution. Proton exchange membrane fuel cells (PEMFC) are the subject of intense research in environmental friendly power transformation and storing tools as a consequence of environmental friendliness, minimal emissions, and great effectiveness. Fuel cell transportation is successful with oxygen reduction process (ORR). Graphite, a highly organized type of carbon, serves as the standard due to its durability and accessibility. This article focuses on the evolution of electrodes as well as electrolytic materials or fluid materials for various kinds of fuel cells and also explains the uses, difficulties, advancements, etc. pertaining to electrodes and fluids of diverse types of fuel cells.

Recent advances in sustainable nanomaterials for energy conversion and environmental remediation via photocatalysis

Photocatalysis is of particular interest because it can be utilized for reducing air pollution and decreasing greenhouse gas emissions. This review examined the latest advances in layered photocatalytic nanomaterials and single-atom catalysts and discloses the synthesis, structural features, and ways to enhance their catalytic ability. In particular, we describe the peculiarities of catalysis mechanisms in CO2 conversion, pollutant and NOx removal, and nitrogen reduction. The current trends in this field and the potential areas for further research are also discussed in this review. It is important to emphasize that single-atom catalysts possess distinct advantages to substantially improve the efficiency of energy conversion processes. The materials related to the synthesizing and post-processing of layered semiconductor catalysts and single-atom catalysts can be useful for other researchers and stakeholders.

The effects of green finance on pollution and carbon reduction: Evidence from China’s industrial firms

Reducing pollution and carbon emissions is important but requires a large amount of capital. Green finance is becoming an important market-based instrument. Few literatures have focused on the direct impact of green finance on corporate environmental performance. This study investigates the effects of green finance on air pollution and carbon reduction in China’s industrial firms from 2008 to 2015. Results show that green finance promotes CO2 and air pollution reduction. Moreover, green finance has a synergistic effect on SO2 and carbon reduction, but not on reduction of dust and carbon emissions. Our findings suggest that green finance reduces emissions by improving corporate energy utilization efficiency. Furthermore, we find that the effects of green finance on emission reduction are more significant among non-state and non-listed firms. These findings have important implications for the development of green finance and synergistic reduction of air pollutants and carbon.